Overview

KB5062624 Overview

KB5062624 is a Monthly Rollup security update for Windows Server 2008 Premium Assurance released on July 8, 2025. This update is part of Microsoft's ongoing security maintenance for Windows Server 2008, which is approaching its end of support in January 2026. The update primarily focuses on addressing security vulnerabilities and implementing hardening changes to the Microsoft RPC Netlogon protocol.

The update builds upon previous security patches, specifically including fixes and quality improvements that were part of the June 10, 2025 Monthly Rollup. It's important to note that this update is only available for systems with Extended Security Updates (ESU) through Premium Assurance, as regular ESU support for Windows Server 2008 ended on January 10, 2023, with Azure-only ESU support ending on January 9, 2024.

Microsoft emphasizes the importance of installing this update as part of maintaining security for Windows Server 2008 systems still in operation, while also recommending organizations plan for migration to newer Windows Server versions before the final end of support date in January 2026.

General Purpose

The primary purpose of KB5062624 is to enhance security for Windows Server 2008 systems still in operation under Premium Assurance. The most significant component of this update is a security hardening change to the Microsoft RPC Netlogon protocol, which improves security by implementing tighter access checks for remote procedure call (RPC) requests. After installation, Active Directory domain controllers will no longer allow anonymous clients to invoke certain RPC requests through the Netlogon RPC server, particularly those related to domain controller location.

This change is particularly important for organizations that rely on the Netlogon protocol for domain controller communications, as it addresses potential security vulnerabilities that could be exploited by unauthorized users. The update is designed to prevent anonymous access to sensitive domain controller location information, thereby reducing the attack surface for potential threat actors.

The update also includes other security fixes detailed in the July 2025 Security Updates guide, though specific details about these additional fixes are not provided in the available documentation. Organizations using Samba file and print service software should be aware that this update may affect their systems and should refer to the Samba release notes for compatibility information.

General Sentiment

The general sentiment surrounding KB5062624 appears cautious but necessary. As this is a security update for Windows Server 2008, which is nearing its final end of support date in January 2026, organizations still running this legacy server operating system likely understand the importance of applying security patches while planning their migration strategies.

The update addresses important security concerns, particularly around the Netlogon protocol, which suggests it's a critical update for maintaining security posture. However, the presence of known issues, specifically the potential for installation failures on devices not properly licensed for ESU or without the proper prerequisites installed, indicates that careful planning is required before deployment.

It's worth noting that Microsoft is clearly using this update notification as an opportunity to remind users about both the upcoming end of support for Windows Server 2008 Premium Assurance and the Windows Secure Boot certificate expiration in June 2026. This suggests an urgency for organizations to accelerate their migration plans away from this legacy platform.

The requirement to install the latest Servicing Stack Update (SSU) before applying this patch adds another layer of complexity to the deployment process, which may cause frustration for administrators managing these aging systems. Overall, while the update itself appears necessary from a security perspective, it comes with implementation challenges that reflect the increasing difficulty of maintaining these end-of-life systems.

Known Issues

• After installing this update and restarting your device, you might receive the error, "Failure to configure Windows updates. Reverting Changes. Do not turn off your computer", and the update might show as Failed in Update History. This issue occurs when installing the update on a device running an edition not supported for ESU. This issue also occurs if you do not have an ESU MAK add-on key installed and activated.* If you have an ESU key and encounter this issue, verify you have applied all prerequisites and that your key is activated.

Disclaimer: We take measures to ensure that AI-generated content is of the highest possible quality, but we cannot guarantee its accuracy and recommend that users do their own independent research. Generated on 2025-07-31 07:15 PM

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